Buying UCO used cooking oil, RedCert, ISCC certified

We would like to buy used cooking oil (UCO) with RedCert or ISCC certification.
We are a company with experience and we are interested in wholesale quantities. 
We need 200 tons in February.
Our demands:
1. water content up to 1%
2. impurities content up to 1%
3. iodine number above 80
4. content of free fatty acids FFA up to 5%.
Delivery to Poland. Optionally we can collect with our own transport (to be arranged further).